Title (de)

Title (fr)

Publication

Application

Priority

US 9704602 W 19970321

US 62172496 A 19960321

Abstract (en)

[origin: WO9735391A1] An apparatus (50) for sourcing an interrogation signal for use in an object identification system including a frequency hopping source (100) for generation of an interrogation transmission by a bi-directional antenna (12) to a tag. Upon receipt, the tag provides a return signal that is backscatter modulated to include tag identification or other data which is processed by the sourcing system (50). The frequency hopping source (100) includes a voltage controller oscillator (206) which is driven by a pseudo random code generator (200) for selecting one of a plurality of hopping frequencies at which the interrogation signal is to be generated based on the available bandwidth.